See the demo here
A better multi-select element that makes use of the material design autocomplete and list elements. It is designed to manage a list of arbitrary objects that is a subset of the total list of objects. In other words, it will let the user select any number of items from a list. For more details head to the view the docs here
To install via npm simply run npm install --save angular-material-autocomplete-list
First include the source code in your html page. The file to include is angular-material-autocomplete-list/dist/autocompeteList.min.js.
Then add the autocompleteList module as a dependent of any modules that may use the directive.
For a full example, you can preview the source of the demo.